Instrument



G.LITTL E.

ARRANGEMENTCPELEC-TRICAL CIRCUITS FOR AUTOMATIC TRANSMITTING INSTRUMENT.

No. 108,495-. Paterited Oot 18, 1870 of electricity are subject to the risk of inaccru'acy,

and-n ake' auattenuated mark on the chemical paper long or-submar'ine lines.

Efforts have been made to introduce a reverse curthe hat teries e and k are to be proportioned so as to sharp and distinct instead of attenuated; but such connection is closed, through the perforation of the v-,eonnections, there being nothing new in the batteries scribed or shown in detail.

GEORGE LITTLE, OF RUTHERFORD PARK, NEW J EESEY.

Letters Patent No. 108,495, dated October 18, 187-0.

IMPROVEMENT IN THE ARRANGEMENT OF ELECTRICAL CIRCUITS FOR AUTOMATIC TRANSMITTING-lNSTRUMENTS.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern.-

Be it known that I, Geonen lumen, of Rutherford Park, in the county of Bergen and State of New Jersey, have invented and made a new and useful Arrangement of Electrical Gircuts for Automatic Transmitting:Telegraph Inst-ruu'ients; and the following is declared tobea correct description thereof. j Telegraphs, inwhich a strip of perforated paper is employed for transmitting the pulsations or waves especially on long lines, because the line isliahle to become clogged, or 'one pulsation to run into another,

instead of'a distiuctdot or dash; this'is especially the case where groups of dots are employed to form the characters or le.tters,.a i1d the pulsations pass orer rent,,to neutralize the remaining portion of the pulsation that makes themark, thus rendering the mark means have dependedupon mechanism or circuit closers that were delicate to adjust, or liable to become inoperative. p v

My invention relates to an arrangement of batteries and electrical circuits, so that when the conpaper, thetwo electrical circuits are completedthrough the brush or stilus, but when the paper intervenes, the two batteries act in opposition to each other,-and neutralize the action of that which sends the pulsation to make the mark at the distant station, there-- by each pulsation becomes distinct, and the line is cleared, and there is no automatic mechanism to operate the reverse circuit, the perforated paper itself being the only-means for operating the two circuits.

. In the drawing I have represented, by-a diagram, thefrespective circuits and the arrangement of the themselves, or in the transmitting or receiving instruments themselves, they do not require to be de- The roller'a and stilus I) represent the transmitting instrument, the perforated paper passing between them, and being drawn along as usual.

The stilus c and roller (I represent the receiving instrument.

The battery 6 is located so that a pulsation of elecy tricity, passes to the distant station either through the ground connections f and g, returning over the line wire 7:, orthe'reverse.

At the same moment the. pulsation from the battery 7a passes by the shortest circuit 6 I, the perforation of the'paper allowing the stilus to complete that -c being also in the same circuit, and the poles of the battery being opposed, positive to positive and negative to negative, thepulsation that produced the mark at the distant station is cut short, or its attenuation prevented by clearing the line by the reverse or negative actiou.- I

It is to he understood that the relative powers of effect the desired object in the most perfect manner, according-to the conditionsof the line and the speed 'of transmission.

The forces of the batteries 6 and It being at times opposed to each other, the batteries remain in a bette'r operative condition, because the positive poles are 1 partially depolarized.

The switches, r n are turned when the transmitting instrument is to be 'used for receiving.

- The connections at both ends of the line should be arranged the same, and the connections made by switches. I claim as my inventiona v The arrangement of the two separate batteries relatively to the automatic transmitting and receiving instruments and their connections, in substantially the manner specified, -"so that when the transmitting circuit is broken, the other circuit acts with a reverse circuit through the transmitting battery, substantially as set forth. v v

Signed by me this 6th day of August, 1870. GEORGE LITTLE.

Witnesses:

CHAS. H. SMITH, HAROLD SERRELL, 

